Luminaire



FIG. 1 is top, front and left side isometric view of an ornamental design for a luminaire, omitting a bottom housing portion;

FIG. 2 is a front elevation view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a left side elevation view thereof;

FIG. 5 is a right side elevation view thereof;

FIG. 6 is a bottom plan view thereof;

FIG. 7 is a rear elevation view thereof; and,

FIG. 8 is a bottom, front and left side isometric view thereof.

The broken lines shown on the drawings depict portions of the luminaire that form no part of the claimed design. 

CLAIM The ornamental design for a luminaire, as shown and described herein. 